UCSF Minnesota HousingSan Francisco, CA
CP FACADES / CASE STUDY
Striking a Balance USCF design architects Kieran Timberlake wanted the buildings to fi t into the look and feel of the Dog Patch neighborhood. Because of this, the University sought out an exterior system that balanced aesthetics with cost and environmental considerations. The design team decided on a rainscreen system but quickly discovered it would exceed the budget and add substantial time to the project schedule.
As a fi eld installed system, it would also require scaffolding. This added cost and created multiple issues because the site didn’t allow the space for this method of construction and union fi eld labor is at a premium in the Bay Area.
It also required collaboration across multiple trades, each installing one of many systems such as cladding, insulation, windows and interior fi nishes. With a budget of $125 per sq. foot, USCF had to explore other options.
A Single Source A single source barrier system would expedite construction, reduce risk and eliminate the need for UCSF to manage work with multiple trades. Clark Pacifi c’s Target Value Design (TVD) methodology gave the University a blank palette to start with and one source for a complete building envelope system that is prefabricated offsite and already tested for ASTM and AAMA air, water and vapor penetration, and meets or exceeds Title 24 building code requirements for every climate zone in California.
Clark Pacifi c’s system meets or exceeds requirements for:
• Water, Air, Vapor, Energy• Standard Transmission Coeffi cient• Title 24 & ASHRAE 90.1• Resilient, Seismic, Fire Performance
With standards and requirements already met, UCSF only needed to think about aesthetics.
Final facade that meetsArchitect & Owner objectives
Owner
Target Value Design
CombinedVision
Budget
Architect
Design
ClarkPaci�c
Design iterationsto meet budget
UNIVERSITY OF CALIFORNIA SAN FRANCISCO MINNESOTA STREET HOUSING 30 MAY 2017 | © KIERANTIMBERLAKEINCIDENT SOLAR RADIATION COMPARED TO FLAT FACADE
NORTH FAÇADE 25% INCIDENT SOLAR REDUCTION
EAST FAÇADE 16% INCIDENT SOLAR REDUCTION
WEST FAÇADE10% INCIDENT SOLAR REDUCTION
SOUTH FAÇADE20% INCIDENT SOLAR REDUCTION
NORTH FAÇADE 37% INCIDENT SOLAR REDUCTION
EAST FAÇADE 28% INCIDENT SOLAR REDUCTION
WEST FAÇADE21% INCIDENT SOLAR REDUCTION
SOUTH FAÇADE39% INCIDENT SOLAR REDUCTION
200
kWh/m2
TOTAL INCIDENT RADIATION
Introduction of the billows to reduce the solar heat gain of the facade. Solar heat guide study by Kieran Timberlake.
Exceeding Expectations with a Prefabricated Building Envelope and Target Value Design
Energy Usage and Thermal Comfort for ResidentsClark Pacific worked with UCSF to determine a window-to-wall ratio that would keep cost within budget while also focusing on thermal comfort. The design team was able to explore multiple scenarios and the effect each would have on energy systems, cost and performance.
Kieran Timberlake also conducted a façade sun exposure analysis to determine impact of solar heat gain on the rooms. The design team selected billows and both horizontal and vertical sunshades were built directly into the Clark Pacific panels on the sun-facing elevations and flat panels on the others.
Clark Pacific’s baseline system meets Title 24 prescriptive requirements and exceeds the requirements on performance. A key component of this is the continuous insulation built into the system. UCSF was able to achieve the U-value with a single source and without hiring another trade subcontractor. The design paramaters of the system made it easier for the owner’s energy consultant to analyze the input.
Results• Working with Clark Pacific as the single source provider eliminated the need for UCSF to work with multiple trades.
• Working through its target value design process and production, Clark Pacific shaved six months off the design schedule.
• Weekly meetings allowed for multiple iterations in design on the fly and as the job progressed while maintaining the TVD budget.
• Standards and requirements were met automatically, eliminating the need for extra consultants and testing.
• Clark Pacific is the single contact for the envelope warranty.
Introduction of the billows to reduce the solar heat gain of the facade. Solar heat guide study by Kieran Timberlake.
Form liners, a cost-effective way to provide depth and contrast.
Insulation applied on panel during the manufacturing process.
Complete panel; insulation, windows and frame ready for transport to the jobsite.
Architectural Precast w/ Glass
Metal Panel on C-CAPP
About Clark Pacifi cClark Pacifi c is a leading manufacturer of prefabricated building systems. We are transforming design and construction by delivering high quality, cost effective buildings with less risk. Clark Pacifi c paves the way for prefabrication as a smarter, safer and more effi cient way to bring great designs to life. Clark Pacifi c collaborates with construction owners and design-build teams to develop and deliver prefabricated building systems for commercial and institutional projects of any size and complexity.
1-800-350-0306 • info@clarkpacifi c.com or visit clarkpacifi c.com
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